Air compressor control method, device, equipment, storage medium and system

Abstract

The invention discloses a control method, device and equipment of an air compressor, a storage medium and a system. The method comprises the steps that the atmospheric pressure and the environment temperature of the working condition of the air compressor are obtained; according to the atmospheric pressure and the environment temperature, the operation attenuation coefficient of the air compressor is obtained; the product of the rated operation power of the air compressor and the operation attenuation coefficient is calculated, and the actual effective operation power is obtained; and controlling the air compressor to operate at a first power, wherein the first power is not greater than the actual effective operation power. According to the control method of the air compressor, when the air compressor operates in the non-standard environment, the operation power of the air compressor can be controlled and adjusted in time, so that the operation power of the air compressor is more adaptive to the atmospheric pressure and the environment temperature of the working condition, the fault probability of the air compressor is reduced, the service life is prolonged, and the user experience is improved. And the application range of the air compressor is expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical appliances, in particular to a control method, device, equipment, storage medium and system of an air compressor. BACKGROUND

[0002] The air compressor is a device for converting mechanical energy into gas pressure energy, driven by an electric motor, and used for compressing air. The design standard operating environment of the air compressor includes specific environmental temperature and pressure conditions. Due to the region, altitude and seasonal changes, the environment of the unit is not necessarily a standard environment. In the related art, when the air compressor operates in a non-standard environment, the operating power corresponding to the standard environment is used, and the air compressor is prone to failure. SUMMARY

[0003] The main purpose of the present application is to provide a control method, device, equipment, storage medium and system of an air compressor, which aims to at least partially solve the technical problem that the air compressor in the related art is prone to failure when operating in a non-standard environment using the operating power corresponding to the standard environment.

[0004] According to an aspect of an embodiment of the present application, a control method of an air compressor is provided, characterized in that it comprises:

[0005] obtaining the atmospheric pressure and the environmental temperature of the working condition of the air compressor;

[0006] obtaining the operating decay coefficient of the air compressor according to the atmospheric pressure and the environmental temperature;

[0007] calculating the product of the rated operating power of the air compressor and the operating decay coefficient to obtain the actual effective operating power;

[0008] controlling the air compressor to operate at a first power, the first power being not greater than the actual effective operating power.

[0009] In some embodiments of the present application, the operating decay coefficient of the air compressor is obtained according to the atmospheric pressure and the environmental temperature, comprising:

[0010] obtaining the current limit load decay coefficient of the air compressor at a preset environmental temperature value according to a pre-obtained first relationship; the first relationship is a corresponding relationship between the preset environmental temperature value, the atmospheric pressure and the current limit load decay coefficient;

[0011] obtaining the operating decay coefficient of the air compressor according to the environmental temperature, the preset environmental temperature value and the current limit load decay coefficient.

[0012] In some embodiments of the present application, the first relationship comprises: according to the environment temperature being the preset environment temperature value, the atmospheric pressure and the current limit load attenuation coefficient constitute a quadratic function with the atmospheric pressure as the independent variable and the current limit load attenuation coefficient as the dependent variable, the quadratic term coefficient of the quadratic function is negative.

[0013] In some embodiments of the present application, the obtaining the operation attenuation coefficient of the air compressor according to the environment temperature, the preset environment temperature value and the current limit load attenuation coefficient comprises:

[0014] according to the environment temperature being greater than the preset environment temperature value, obtaining the operation attenuation coefficient of the air compressor according to the current limit load attenuation coefficient, the environment temperature and a second relationship obtained in advance, the second relationship being a corresponding relationship among the current limit load attenuation coefficient, the operation attenuation coefficient and the environment temperature, the operation attenuation coefficient being negatively correlated with the environment temperature.

[0015] according to the environment temperature being greater than the preset environment temperature value, obtaining the operation attenuation coefficient of the air compressor according to the current limit load attenuation coefficient, the environment temperature and a second relationship obtained in advance, the second relationship being a corresponding relationship among the current limit load attenuation coefficient, the operation attenuation coefficient and the environment temperature, the operation attenuation coefficient being negatively correlated with the environment temperature.

[0016] In some embodiments of the present application, the second relationship is a linear function with the environment temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the slope of the linear function is negative; the slope is the product of a first preset coefficient and the current limit load attenuation coefficient; the vertical axis intercept of the linear function is the product of a second preset coefficient and the current limit load attenuation coefficient.

[0017] In some embodiments of the present application, the second relationship is a quadratic function with the environment temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the quadratic term coefficient of the quadratic function is negative, and the linear term coefficient of the quadratic function is positive.

[0018] In some embodiments of the present application, the controlling the air compressor to operate at the first power comprises:

[0019] obtaining the actual operation current of the air compressor;

[0020] according to the actual operation current being greater than or equal to a first current, controlling the air compressor to unload; the first current being the product of a first preset current threshold and the operation attenuation coefficient;

[0021] according to the actual operation current being greater than or equal to a second current and less than the first current, controlling the air compressor to stop loading; the second current being the product of a second preset current threshold and the operation attenuation coefficient; the second current being less than the first current.

[0022] According to another aspect of the embodiments of the present application, a control device of an air compressor is provided, comprising:

[0023] a sensing module configured to acquire an atmospheric pressure and an ambient temperature of a working condition in which the air compressor is located;

[0024] a running attenuation coefficient acquisition module configured to acquire a running attenuation coefficient of the air compressor according to the atmospheric pressure and the ambient temperature;

[0025] a real effective running power acquisition module configured to calculate a product of a rated running power of the air compressor and the running attenuation coefficient to obtain a real effective running power;

[0026] a control module configured to control the air compressor to run at a power not greater than the real effective running power.

[0027] According to another aspect of the embodiments of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the air compressor according to any of the embodiments of the present application.

[0028] According to another aspect of the embodiments of the present application, a computer readable storage medium is provided, having a computer program stored thereon, wherein the computer program is executable by a processor to implement the control method of the air compressor according to any of the embodiments of the present application.

[0029] According to another aspect of the embodiments of the present application, a heating and ventilation system is provided, comprising an air compressor and the electronic device according to any of the embodiments of the present application, wherein the electronic device is connected to the air compressor.

[0030] In the technical scheme, the atmospheric pressure and the ambient temperature of the working condition in which the air compressor is located are acquired, the running attenuation coefficient of the air compressor is acquired according to the atmospheric pressure and the ambient temperature, the product of the rated running power of the air compressor and the running attenuation coefficient is calculated to obtain the real effective running power, and then the air compressor is controlled to run at the first power not greater than the real effective running power, so that the running power of the air compressor can be timely controlled and adjusted when the air compressor runs in a non-standard environment, and the running power of the air compressor is more adapted to the atmospheric pressure and the ambient temperature of the working condition, thereby reducing the probability of failure of the air compressor, prolonging the service life, and expanding the application range of the air compressor. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor.

[0032] Figure 1 Flow chart of the control method of the air compressor of one embodiment of the present application;

[0033] Figure 2 Flow chart of the step of obtaining the running attenuation coefficient of the air compressor according to the atmospheric pressure and the ambient temperature of the working condition of one embodiment of the present application;

[0034] Figure 3 Flow chart of the step of obtaining the running attenuation coefficient of the air compressor according to the ambient temperature and the current limited attenuation coefficient of one embodiment of the present application;

[0035] Figure 4 Curve diagram of the relationship between the ambient temperature ST01 and the running attenuation coefficient Mhc of the air compressor of one embodiment of the present application;

[0036] Figure 5 Curve diagram of the relationship between the ambient temperature ST01 and the running attenuation coefficient Mhc of the air compressor of another embodiment of the present application;

[0037] Figure 6 Flow chart of the control of the air compressor to run at the first power of one embodiment of the present application;

[0038] Figure 7 Structural block diagram of the control device of the air compressor of one embodiment of the present application;

[0039] Figure 8 Structural block diagram of the electronic device of one embodiment of the present application;

[0040] Figure 9 Schematic diagram of the computer readable storage medium of one embodiment of the present application.

[0041] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0042] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0043] It should be noted that all the direction indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative position relationship, motion condition and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications also change accordingly.

[0044] In addition, the descriptions such as “first”, “second” and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first” and “second” can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of “a plurality of” is at least two, for example, two, three, and the like, unless otherwise specifically limited.

[0045] In the present application, unless otherwise specifically defined and limited, the terms “connection”, “fixation” and the like should be understood in a broad sense, for example, “fixation” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0047] The air compressor is a kind of mechanical equipment widely used in industry, which is simply referred to as air compressor (or centrifugal machine). Different operating environments have a great influence on the air compressor, in order to realize the continuous and reliable operation of the unit, the operating power of the unit needs to be limited for some specific operating conditions. When the air compressor operates in a non-standard environment, because the operating temperature and atmospheric pressure of the non-standard environment are different from those of the standard environment, the air compressor adopts the operating power corresponding to the standard environment, which is prone to failure.

[0048] In response to the problem in the related art that when the air compressor operates in a non-standard environment, it uses the operating power corresponding to the standard environment, which makes the air compressor prone to malfunction. An embodiment of the present application provides a control method for an air compressor, which obtains the atmospheric pressure and ambient temperature of the working conditions of the air compressor, obtains the operating attenuation coefficient of the air compressor based on the atmospheric pressure and ambient temperature, calculates the product of the rated operating power of the air compressor and the operating attenuation coefficient to obtain the actual effective operating power, and then controls the air compressor to operate at a first power, which is not greater than the actual effective operating power. Therefore, when the air compressor operates in a non-standard environment, the operating power of the air compressor can be timely controlled and adjusted to make its operating power more suitable for the atmospheric pressure and ambient temperature of the working conditions, thereby reducing the probability of failure of the air compressor, extending its service life, and expanding the scope of application of the air compressor.

[0049] refer to Figure 1 As shown, an embodiment of the present application provides a method for controlling an air compressor, which may include steps S10-S40:

[0050] S10. Obtain the atmospheric pressure and ambient temperature of the working condition of the air compressor.

[0051] The atmospheric pressure of the air compressor can be obtained using a pressure sensor. The ambient temperature of the air compressor can be, for example, the first-stage suction temperature. The first-stage suction temperature is the temperature of the refrigerant entering the first-stage (low-pressure) suction flange of the air compressor. This temperature can be measured directly at the first-stage flange of the suction pipe using a temperature sensor.

[0052] S20. Obtain an operating attenuation coefficient of the air compressor according to the atmospheric pressure and ambient temperature of the working condition.

[0053] The operating attenuation coefficient of an air compressor refers to the degree to which its performance gradually declines over time. Performance indicators include but are not limited to exhaust volume, energy efficiency, etc.

[0054] In some embodiments, reference Figure 2 As shown, obtaining the operating attenuation coefficient of the air compressor according to the atmospheric pressure and ambient temperature of the working conditions may include steps S201-S202:

[0055] S201 . Obtain a current load limit attenuation coefficient of an air compressor at a preset ambient temperature value according to a pre-acquired first relationship; the first relationship is a correspondence between the preset ambient temperature value, the atmospheric pressure, and the current load limit attenuation coefficient.

[0056] The current limited load attenuation coefficient is a coefficient for describing the attenuation degree of the current signal of the air compressor in a load running state in the transmission process, and can reflect the energy loss degree of the air compressor in a limited load running state by quantifying the loss proportion of the current.

[0057] The preset ambient temperature value may be, for example, 30°C, or other temperature values, which can be set according to actual application needs.

[0058] In some embodiments, the first relationship can include: according to the ambient temperature being a preset ambient temperature value (i.e., in the case of the ambient temperature being a preset ambient temperature value), the atmospheric pressure and the current limited load attenuation coefficient form a quadratic function with the atmospheric pressure as the independent variable and the current limited load attenuation coefficient as the dependent variable, and the quadratic term coefficient of the quadratic function is a negative number.

[0059] The form of the quadratic function can be Mhc(T) = (a*LAP^2+b*LAP-c) / 100, where LAP represents the atmospheric pressure of the working condition of the air compressor, T represents the preset ambient temperature value, a is the quadratic term coefficient, b is the linear term coefficient, and c is the constant term, where a, b, and c are obtained by fitting the data obtained by a plurality of experiments in advance, or a, b, and c can also be pre-set according to historical data experience values.

[0060] For example, in the case of the preset ambient temperature value being 30°C (i.e., T = 30°C), the quadratic function with the atmospheric pressure as the independent variable and the current limited load attenuation coefficient Mhc(30°C) as the dependent variable is

[0061] Mhc(30°C) = (a*LAP^2+b*LAP-c) / 100, where LAP represents the atmospheric pressure of the working condition of the air compressor, a is the quadratic term coefficient, b is the linear term coefficient, and c is the constant term, where a, b, and c are obtained by fitting the data obtained by a plurality of experiments in advance, or a, b, and c can also be pre-set according to historical data experience values.

[0062] S202, obtaining the running attenuation coefficient of the air compressor according to the ambient temperature, the preset ambient temperature value, and the current limited load attenuation coefficient.

[0063] In some embodiments, referring to Figure 3 As shown, obtaining the running attenuation coefficient of the air compressor according to the ambient temperature, the preset ambient temperature value, and the current limited load attenuation coefficient can include steps S2021-S2022:

[0064] S2021、According to the environment temperature being not greater than the preset environment temperature value, taking the current limit load attenuation coefficient as the operation attenuation coefficient of the air compressor.

[0065] In the case that the environment temperature is not greater than the preset environment temperature value, the operation attenuation coefficient of the air compressor changes little and is close to the current limit load attenuation coefficient, so taking the current limit load attenuation coefficient as the operation attenuation coefficient of the air compressor can reduce the calculation amount.

[0066] In the case that the environment temperature is not greater than the preset environment temperature value T, taking the current limit load attenuation coefficient Mhc(T) of the air compressor at the preset environment temperature value as the operation attenuation coefficient of the air compressor. For example, in the case that T=30℃, if the environment temperature is ≤30℃, the operation attenuation coefficient Mhc of the air compressor is Mhc(30℃).

[0067] S2022、According to the environment temperature being greater than the preset environment temperature value, obtaining the operation attenuation coefficient of the air compressor according to the current limit load attenuation coefficient, the environment temperature and the second relationship obtained in advance, the second relationship being the corresponding relationship between the current limit load attenuation coefficient, the operation attenuation coefficient and the environment temperature, and the operation attenuation coefficient being negatively correlated with the environment temperature.

[0068] In the case that the environment temperature is greater than the preset environment temperature value, obtaining the operation attenuation coefficient of the air compressor according to the current limit load attenuation coefficient, the environment temperature and the second relationship obtained in advance. Based on the second relationship, the higher the environment temperature of the working condition of the air compressor, the smaller the operation attenuation coefficient of the air compressor, and the lower the environment temperature of the working condition of the air compressor, the greater the operation attenuation coefficient of the air compressor.

[0069] Exemplarily, the second relationship is a linear function with the environment temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the slope of the linear function is a negative number; the slope is the product of a first preset coefficient and the current limit load attenuation coefficient; the vertical axis intercept of the linear function is the product of a second preset coefficient and the current limit load attenuation coefficient.

[0070] The second relationship is expressed as a linear function, which is relatively simple, the calculation process is simple, and the calculation amount can be reduced.

[0071] The linear function can be Mhc=Mhc(T)*(e*ST01+f) / 100=Mhc(30℃)*e*ST01 / 100+Mhc(30℃)*f / 100; wherein T represents the preset environment temperature value, Mhc(T)*e is the coefficient of the linear term, e is less than 0, f is the constant term, f>0; e and f are preset constants, and the values of e and f can be obtained by fitting the data of multiple experiments in advance or can be preset according to historical experience data.

[0072] For example, when T = 30℃, the linear function can be

[0073] Mhc = Mhc(30℃)*(e*ST01+f) / 100 = Mhc(30℃)*e*ST01 / 100 + Mhc(30℃)*f / 100.

[0074] Exemplarily, referring to FIG. 2, according to the ambient temperature ST01 and the current limit load attenuation coefficient Mhc(T), the operation attenuation coefficient Mhc of the air compressor can be obtained, which can include: Figure 4

[0075] When ST01≤T, Mhc = Mhc(T);

[0076] When ST01>T, Mhc = Mhc(T)*(e*ST01+f) / 100;

[0077] Wherein, T represents a preset ambient temperature value.

[0078] Exemplarily, the second relationship is a quadratic function with the ambient temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the quadratic term coefficient of the quadratic function is negative, and the linear term coefficient of the quadratic function is positive.

[0079] The operation attenuation coefficient obtained by representing the second relationship as a quadratic function has higher accuracy.

[0080] The quadratic function can be Mhc = m*ST01^2 + n*ST01 + p, wherein m<0, ST01>T, m, n and p are all preset constants, the values of m, n and p can be obtained by fitting data of multiple experiments in advance, or can be preset according to historical experience data; and the limit value of the quadratic function when ST01 tends to T is Mhc(T). For example, when T = 30℃, the limit value of Mhc when ST01 tends to 30℃ is Mhc(30℃).

[0081] Exemplarily, referring to FIG. 2, according to the ambient temperature ST01 and the current limit load attenuation coefficient Mhc(T), the operation attenuation coefficient Mhc of the air compressor can be obtained, which can include: Figure 5

[0082] When ST01≤T, Mhc = Mhc(T);

[0083] When ST01>T, Mhc = m*ST01^2 + n*ST01 + p, and the limit value of Mhc when ST01 tends to T is Mhc(T), that is, the relationship curve between the ambient temperature ST01 and the operation attenuation coefficient Mhc of the air compressor is continuous. ​​

[0084] In one specific example, the preset ambient temperature value T = 30℃, according to the corresponding relationship between the current limit load attenuation coefficient Mhc and the atmospheric pressure LAP of the working condition of the air compressor and the first suction temperature ST01, the calculation formula of the current limit load attenuation coefficient Mhc (30℃) when the preset ambient temperature value is 30℃ (i.e. the first suction temperature is 30℃) is

[0085] Mhc (30℃) = (a * LAP^2 + b * LAP - c) / 100; wherein, LAP represents the atmospheric pressure of the working condition of the air compressor, a is the coefficient of the quadratic term, b is the coefficient of the linear term, and c is the constant term, wherein a, b, and c are obtained by fitting the data obtained by a plurality of experiments in advance, or a, b, and c can also be pre-set according to historical data experience values.

[0086] Taking LAP = 101Kpa and ST01 = 30℃ as the rated coefficient point as an example, LAP = 101Kpa is substituted into the above formula, and the corresponding current limit load attenuation coefficient Mhc (30℃) can be calculated, and the calculation formula of the running attenuation coefficient Mhc of the air compressor according to the first suction temperature ST01 and the current limit load attenuation coefficient is:

[0087] When ST01 ≤ 30℃, Mhc = Mhc (30℃);

[0088] When ST01 > 30, Mhc = Mhc (30℃) * (e * ST01 + f) / 100; wherein, e is the coefficient of the linear term, and f is the constant term.

[0089] S30, calculate the product of the rated running power of the air compressor and the running attenuation coefficient to obtain the actual effective running power.

[0090] The rated running power of the air compressor refers to the running power under ideal conditions, and the actual effective running power is the product of the rated running power and the running attenuation coefficient.

[0091] S40, control the air compressor to run at a first power, the first power being not greater than the actual effective running power.

[0092] In some embodiments, referring to FIG. 4, controlling the air compressor to run at a first power can include steps S401-S403: Figure 6

[0093] S401, obtain the actual running current of the air compressor.

[0094] ​Specifically, the actual operating current of the air compressor can be obtained by using a clamp ammeter through electromagnetic induction non-contact measurement, or a multimeter can be used to detect the actual operating current of the air compressor, or other methods can also be used for measurement.

[0095] S402、According to the actual operating current greater than or equal to the first current, control the air compressor to unload; the first current is the product of the first preset current threshold and the operating decay coefficient.

[0096] In the case that the actual operating current is greater than or equal to the first current, the air compressor is controlled to unload. The way to control the air compressor to unload, for example, can control to close the air inlet valve of the air compressor, open the vent valve of the air compressor, release the pressure, and make the air compressor idle, so as to achieve unloading; or, the air compressor can also be unloaded by controlling the frequency converter to adjust the motor to reduce the frequency.

[0097] S403、According to the actual operating current greater than or equal to the second current and less than the first current, control the air compressor to stop loading; the second current is the product of the second preset current threshold and the operating decay coefficient; the second current is less than the first current.

[0098] In the case that the actual operating current is greater than or equal to the second current and less than the first current, the air compressor is controlled to stop loading. The way to control the compressor to load includes controlling to increase the opening of the air inlet valve of the air compressor, and increasing the motor speed through the frequency converter. In the case that the actual operating current is greater than or equal to the second current and less than the first current, the air compressor stops performing the operation of controlling the compressor to load.

[0099] The first current and the second current can represent the load degree of the air compressor, the second current is less than the first current, the case that the actual operating current is greater than or equal to the second current and less than the first current represents that the load of the air compressor has reached the degree that needs to stop loading; the case that the actual operating current is greater than or equal to the first current represents that the load of the air compressor has reached the degree that needs to control the air compressor to unload.

[0100] The size relationship between the actual operating current of the air compressor and the first current and the second current can more accurately reflect the load degree of the air compressor, so that the operating power of the air compressor can be more accurately controlled to adjust the load of the air compressor, reduce the probability of excessive load of the air compressor, reduce the failure rate of the air compressor, and prolong the service life of the air compressor.

[0101] Reference Figure 7 As shown, another embodiment of the present application provides a control device of an air compressor, which can include:

[0102] a sensing module configured to acquire an atmospheric pressure and an ambient temperature of a working condition of the air compressor;

[0103] a running attenuation coefficient acquisition module configured to acquire a running attenuation coefficient of the air compressor according to the atmospheric pressure and the ambient temperature;

[0104] an actual effective running power acquisition module configured to calculate a product of a rated running power of the air compressor and the running attenuation coefficient to obtain an actual effective running power;

[0105] a control module configured to control the air compressor to run at a power not greater than the actual effective running power.

[0106] In some embodiments, the running attenuation coefficient acquisition module can include:

[0107] a current limit load attenuation coefficient acquisition unit configured to acquire a current limit load attenuation coefficient of the air compressor at a preset ambient temperature value according to a first relationship; the first relationship is a corresponding relationship between the preset ambient temperature value, the atmospheric pressure and the current limit load attenuation coefficient;

[0108] a running attenuation coefficient acquisition unit configured to acquire the running attenuation coefficient of the air compressor according to the ambient temperature, the preset ambient temperature value and the current limit load attenuation coefficient.

[0109] Exemplarily, the first relationship can include: according to the ambient temperature being the preset ambient temperature value (i.e. in the case of the ambient temperature being the preset ambient temperature value), the atmospheric pressure and the current limit load attenuation coefficient constitute a quadratic function with the atmospheric pressure as the independent variable and the current limit load attenuation coefficient as the dependent variable, and a quadratic term coefficient of the quadratic function is a negative number.

[0110] In some embodiments, the running attenuation coefficient acquisition unit can include:

[0111] a first sub-unit configured to take the current limit load attenuation coefficient as the running attenuation coefficient of the air compressor according to the ambient temperature being not greater than the preset ambient temperature value;

[0112] a second sub-unit configured to acquire the running attenuation coefficient of the air compressor according to the current limit load attenuation coefficient, the ambient temperature and a second relationship pre-acquired according to the ambient temperature being greater than the preset ambient temperature value; the second relationship is a corresponding relationship between the current limit load attenuation coefficient, the running attenuation coefficient and the ambient temperature, and the running attenuation coefficient is negatively correlated with the ambient temperature. That is, in the case of the ambient temperature being greater than the preset ambient temperature value, the running attenuation coefficient of the air compressor is acquired according to the current limit load attenuation coefficient, the ambient temperature and the second relationship pre-acquired.

[0113] Exemplarily, the second relationship is a linear function with the ambient temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the slope of the linear function is a negative number; the slope is a product of a first preset coefficient and the current limit load attenuation coefficient; and the vertical axis intercept of the linear function is a product of a second preset coefficient and the current limit load attenuation coefficient.

[0114] Exemplarily, the second relationship is a quadratic function with the ambient temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the quadratic term coefficient of the quadratic function is a negative number, and the linear term coefficient of the quadratic function is a positive number.

[0115] In some embodiments, the control module can comprise:

[0116] a current acquisition unit configured to acquire an actual operation current of the air compressor;

[0117] a first control unit configured to control the air compressor to unload when the actual operation current is greater than or equal to a first current, the first current being a product of a first preset current threshold and the operation attenuation coefficient; that is, the air compressor is controlled to unload when the actual operation current is greater than or equal to the first current;

[0118] a second control unit configured to control the air compressor to stop loading when the actual operation current is greater than or equal to a second current and less than the first current, the second current being a product of a second preset current threshold and the operation attenuation coefficient, and the second current being less than the first current; that is, the air compressor is controlled to stop loading when the actual operation current is greater than or equal to the second current and less than the first current.

[0119] The control device of the air compressor according to the embodiments of the present application acquires the atmospheric pressure and the ambient temperature of the working condition in which the air compressor is located, acquires the operation attenuation coefficient of the air compressor according to the atmospheric pressure and the ambient temperature, calculates a product of the rated operation power of the air compressor and the operation attenuation coefficient to obtain an actual effective operation power, and then controls the air compressor to operate at a first power, the first power being not greater than the actual effective operation power, so that the operation power of the air compressor can be timely controlled and adjusted when the air compressor operates in a non-standard environment, and the operation power of the air compressor is more adapted to the atmospheric pressure and the ambient temperature of the working condition, thereby reducing the probability of failure of the air compressor, prolonging the service life, and expanding the application range of the air compressor.

[0120] The above description of each of the embodiments tends to emphasize the differences between the embodiments, and the same or similar parts can be mutually referred to for brevity, which will not be described herein again.

[0121] Another embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the control method of the air compressor of any of the above embodiments.

[0122] Reference Figure 8 As shown in the figure, the electronic device 10 can comprise a processor 100, a memory 101, a bus 102 and a communication interface 103, the processor 100, the communication interface 103 and the memory 101 are connected through the bus 102; the memory 101 stores a computer program executable on the processor 100, and the processor 100 executes the computer program to implement the method provided by any of the above embodiments of the present application.

[0123] The memory 101 can include a high-speed random access memory (RAM: Random Access Memory), and can also include a non-volatile memory, such as at least one disk memory. The communication connection between the device network element and at least one other network element is realized through at least one communication interface 103 (which can be wired or wireless), and the Internet, a wide area network, a local network, a metropolitan area network, etc. can be used.

[0124] The bus 102 can be an ISA bus, a PCI bus, an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. The memory 101 is used to store programs, and the processor 100 executes the programs after receiving execution instructions. The method disclosed in any of the above embodiments of the present application can be applied to the processor 100 or implemented by the processor 100.

[0125] The processor 100 can be an integrated circuit chip with processing capability. In implementation process, each step of the above method can be completed by integrated logic circuit of hardware in the processor 100 or by instructions in the form of software. The processor 100 described above can be a general processor, which can include a central processing unit (CPU), a network processor (NP), etc.; or can be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, etc. The storage medium in the memory 101 is read by the processor 100, and the hardware thereof is combined to complete the steps of the above method.

[0126] The electronic device provided by the embodiments of the present application and the method provided by the embodiments of the present application have the same beneficial effects as the method adopted, run or implemented by the electronic device.

[0127] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be referred to each other, and for the sake of brevity, the description is not repeated herein.

[0128] Another embodiment of the present application provides a computer readable storage medium, which stores a computer program executed by a processor to implement the method of any of the above embodiments. Referring to Figure 9 As shown, the computer readable storage medium is an optical disc 20, which stores a computer program (i.e. program product), and the computer program is executed by the processor to perform the control method of the air compressor provided by any of the above embodiments.

[0129] It should be noted that examples of the computer readable storage medium can also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other optical, magnetic storage medium, which will not be repeated here.

[0130] The computer readable storage medium provided by the above embodiments of the present application has the same inventive concept as the method provided by the embodiments of the present application, and has the same beneficial effects as the method adopted, run or implemented by the application stored therein.

[0131] Another embodiment of the present application provides a heating system, comprising an air compressor and the electronic device of any of the embodiments of the present application connected to the air compressor. The electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the control method of the air compressor of any of the above embodiments.

[0132] The above description of the various embodiments tends to emphasize the differences between the various embodiments, and the same or similar parts can be referred to each other, and will not be described herein for the sake of brevity.

[0133] It should be noted that:

[0134] The term "module" is not intended to be limited to a particular physical form. Depending on the specific application, the module can be implemented as hardware, firmware, software and / or a combination thereof. In addition, different modules can share common components or even be implemented by the same components. There can or can not be a clear boundary between different modules.

[0135] The algorithms and displays provided herein are not inherently related to any particular computer, virtual apparatus, or other apparatus. Various general purpose systems can be used with these examples based upon the description herein. General structure required to construct such systems is apparent to those skilled in the art from the description above. In addition, the present application is not intended to be limited to any particular programming language. It will be appreciated that there are many programming languages that can be used to implement the teachings of the present application as described herein, and any such programming language can be used in the context of the present application. The descriptions above are intended to provide examples of the best mode of practicing the present application, and should not be used to limit or define the scope of the application.

[0136] It should be understood that, although each step in the flowchart of the accompanying drawings is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in sequence according to the direction of the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and they can be executed in other order. Moreover, at least part of the steps in the flowchart of the accompanying drawings can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order is not necessarily sequential, but can be alternately or alternately executed with at least part of other steps or other steps, sub-steps or stages.

[0137] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural changes made under the concept of the present application, or direct / indirect application in other related technical fields, using the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A method for controlling an air compressor, characterized in that: include: Obtain the atmospheric pressure and ambient temperature of the air compressor's working conditions; obtaining an operating attenuation coefficient of the air compressor according to the atmospheric pressure and the ambient temperature; Calculating the product of the rated operating power of the air compressor and the operating attenuation coefficient to obtain the actual effective operating power; The air compressor is controlled to operate at a first power, where the first power is not greater than the actual effective operating power.

2. The method according to claim 1, wherein The obtaining, according to the atmospheric pressure and the ambient temperature, an operating attenuation coefficient of the air compressor includes: Obtaining a current load limit attenuation coefficient of the air compressor at a preset ambient temperature value according to a pre-acquired first relationship; the first relationship being a correspondence between the preset ambient temperature value, the atmospheric pressure, and the current load limit attenuation coefficient; An operation attenuation coefficient of the air compressor is obtained according to the ambient temperature, the preset ambient temperature value, and the current load limit attenuation coefficient.

3. The method according to claim 2, wherein The first relationship includes: according to the ambient temperature being the preset ambient temperature value, the atmospheric pressure and the current load limit attenuation coefficient form a quadratic function with the atmospheric pressure as the independent variable and the current load limit attenuation coefficient as the dependent variable, and the quadratic term coefficient of the quadratic function is a negative number.

4. The method according to claim 2 or 3, wherein: The obtaining, according to the ambient temperature, the preset ambient temperature value, and the current load limit attenuation coefficient, of the operation attenuation coefficient of the air compressor includes: According to the ambient temperature being no greater than the preset ambient temperature value, using the current load limit attenuation coefficient as the operation attenuation coefficient of the air compressor; According to the ambient temperature being greater than the preset ambient temperature value, the operating attenuation coefficient of the air compressor is obtained according to the current load limiting attenuation coefficient, the ambient temperature, and a pre-acquired second relationship, wherein the second relationship is a corresponding relationship between the current load limiting attenuation coefficient, the operating attenuation coefficient, and the ambient temperature, and the operating attenuation coefficient is negatively correlated with the ambient temperature.

5. The method according to claim 4, wherein The second relationship is a linear function with the ambient temperature as the independent variable and the operating attenuation coefficient as the dependent variable; the slope of the linear function is a negative number; the slope is the product of the first preset coefficient and the current load limit attenuation coefficient; the vertical axis intercept of the linear function is the product of the second preset coefficient and the current load limit attenuation coefficient.

6. The method according to claim 4, wherein The second relationship is a quadratic function with the ambient temperature as the independent variable and the operation attenuation coefficient as the dependent variable; the quadratic term coefficient of the quadratic function is a negative number, and the linear term coefficient of the quadratic function is a positive number.

7. The method according to any one of claims 1 to 3, wherein The controlling the air compressor to operate at a first power comprises: Obtaining the actual operating current of the air compressor; According to the actual operating current being greater than or equal to a first current, controlling the air compressor to unload; the first current being the product of a first preset current threshold and the operating attenuation coefficient; According to the actual operating current being greater than or equal to a second current and less than the first current, the air compressor is controlled to stop loading; the second current is the product of a second preset current threshold and the operating attenuation coefficient; the second current is less than the first current.

8. A control device for an air compressor, characterized in that: include: A sensor module is used to obtain the atmospheric pressure and ambient temperature of the air compressor; an operation attenuation coefficient obtaining module, configured to obtain an operation attenuation coefficient of the air compressor according to the atmospheric pressure and the ambient temperature; an actual effective operating power acquisition module, configured to calculate the product of the rated operating power of the air compressor and the operating attenuation coefficient to obtain the actual effective operating power; A control module is used to control the air compressor to operate at a power no greater than the actual effective operating power.

9. An electronic device, characterized in that: The air compressor comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the air compressor control method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to implement the air compressor control method according to any one of claims 1 to 7.

11. A heating and ventilation system, characterized in that: The electronic device comprises an air compressor and the electronic device according to claim 9, wherein the electronic device is connected to the air compressor.

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